Bugtraq mailing list archives
Re: base64
From: Erwan David <Erwan.David () trusted-logic fr>
Date: Tue, 23 Sep 2003 08:44:43 +0200
Le Mon 22/09/2003, "Ilya Teterin" disait
Consider we decoding data which contains padding character ('=') at the unexpected place. What we should do with such data? The specification of base64 decoding does not tell us what we MUST or even MAY do with such data... So, we can do anything we like to do: 1. threat padding character as end of the encoded data 2. ignore padding character 3. decode padding character as well as some other character from base64 alphabet 4. do something else ;-) I have tested some popular implementations (such as email clients, GNU utilities, RTL and other development's libraries). All items (1)-(4) are actually pre
I'll add 5. consider data encoding as broken and return an error. The base64 specification specifies how to encode. If you get padding character inside data, it's no more base64 encoded data. -- Erwan David ========================================================== Trusted Logic Tel: +33 1 30 97 25 03 5 rue du Bailliage Std: +33 1 30 97 25 00 78000 Versailles Fax: +33 1 30 97 25 19 France
Current thread:
- base64 Ilya Teterin (Sep 22)
- Re: base64 Bennett Todd (Sep 22)
- Re: base64 Erwan David (Sep 23)
- Re: base64 Birl (Sep 23)
- Re: base64 Lothar Kimmeringer (Sep 24)
- Re: base64 David Wilson (Sep 24)
- Re: base64 Earl Hood (Sep 25)
- Re: base64 Christian Vogel (Sep 25)
- Re: base64 Seth Breidbart (Sep 24)
- Re: base64 Lothar Kimmeringer (Sep 24)
- Re: base64 Alexander Ogol (Sep 23)
- Re: base64 Christian Vogel (Sep 24)
- Re: base64 David Wilson (Sep 24)
- Re: base64 der Mouse (Sep 24)
- Re: base64 Christian Vogel (Sep 24)